Check attachment for pulleys and chocks.



PATENTED MAY 29 R. KURELLA. CHECK ATTACHMENT FOB. PULLEYS AND UHOOKS.

APPLICATION FILED JULY 7,1905.

2 SHEETS-SHEET 1.

WITNESSES:

ATTOR PATENTED MAY 29 R. KURELLA.

CHECK ATTACHMENT FOR PULLEYS AND G HOCKS.

APPLICATION FILED JULY 7,1905. 7

2 SHEETS-SHEET 2.

m mvron Bud/ 097]; .Zfural Z a momvm RUDOLPH KURELLA, OF BROOKLYN, NEW YORK.

CHECK ATTACHMENT FOR PULLEYS AND CHOCKS.

Specification of Letters Patent.

Patented May 29, 1906.

Application filed July 7,1905. Serial No, 268,689.

To (1M whom it IN/(LU concern.-

Be it known that I, RUDOLPH KURELLA, a citizen. of the United States, and a resident of the city of New York, borough of Brooklyn,

in the county of Kings and State of New York, have invented a new and useful Check Attachment for Pulleys and Chocks, of which the following is a full, clear, and exact de scription.

The purpose of the invention is to provide an attachment to checks, leading-pulley blocks, and the like which can be set to permit the free passage of a rope through the chock or pulley or set to clamp the rope in such manner that at such time the more strain to which the rope is subjected the tighter the attachment will hold the rope.

Another purpose of the invention is to provide an attachment of the character mentioned which can be readily operated and which will be simple, durable, and economic in construction.

The invention consists in the novel construction and combination of the several parts, as will be hereinafter fully set forth, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a side elevation of a chock and a front elevation of the attachment applied thereto. Fig. 2 is a vertical section taken practically on the line 2 2 of Fig. 1. Fig. 3 is a plan view of a chock and attachment applied, the view being drawn upon a small scale. Fig. 4 is a side elevation of a leading-pulley and the attachment applied. Fig. 5 is an enlarged vertical section taken practically on the line 5 5 of Fig. 6 and Fig. 6 is an enlarged sectional front elevation, the section being taken substantially on the line 6 6 of Fig. 5.

A represents a chock of ordinary type which is provided at one side near its lower edge with a longitudinal T-rail 10, upon which rail the attachment B is adapted to slide. This attachment is in two sections, a lower section 11 and an upper section 12. The lower section 1 1 is provided with a chamber 13 at its upper portion, having a front opening 14 and a rear opening 15, both of said openings 14 and being more or less concaved. The upper section 12 of the at tachment is provided with a much larger chamber 16 in communication with the chamber 13 of the lower section 11, and said chamber 16 is provided at its lower portion with a front opening 14'" and a rear opening 15 the opening 14F being just above the opening 14 and the opening 15 just above the opening 15. The said openings are so formed that when one section is closed upon the other the v joint openings at the front and at the rear of the attachment are more or less circular or oblong.

Afan-shaped cam 17 is located in the chamber 16 of the upper section of the attachment, as is best shown in Fig. 2. This cam is socured to a shaft 18, suitably journaled in the upper portion of the attachment, and the cam is provided with a longitudinal groove 19, which extends along its margin, particularly that portion which is adjacent to the shaft 18, and the longer end of the said cam 17, or that end which is farthest from the shaft 18, is provided with serrations 20. as is also shown best in Fig. 2.

A handle 21 is secured to the outer end of the shaft 18, and by means of the said handle the cam 17 is turned either in a direction to permit the rope to slip readily over the grooved portion 19 of the cam or so that the serrated section 20 of the cam will be down ward in position to grip the rope and hold it fast.

The two sections 11 and 12 of the check are connected by a hinge 22, located at one side of the attachment, as shown in Figs. 1 and 3 and at the opposite side of the attachment an arm 23 is secured to the side of the upper section 12, which arm is provided with an aperture, and this aperture when the two sections of the attachment are closed is brought over into registry with an aperture in a lug 24, formed on the corresponding side of the lower .section 11, and a pin 25 or its equivalent is thereupon passed through the registering apertures, and in this or an equivalent manner the two sections of the attachment are held locked in operation.

In Figs. 4, 5, and 6 I have shown the appli cation of the device to a leading-pulley block, wherein the block 26 in Fig. 4 is shown connected by a hook 28 to a holdfast 27, and straps 29 are carried up from opposite sides of the block 26 to a point above the upper edge of the block, and a hood 30 is formed at the upper ends of the straps 29, which hood is of greater width than the width of the straps and is at an angle thereto. This hood 30 is provided with a chamber 31, more or less semicircular, its forward end and bottom portion being open and its rear portion 32 being more or less concaved and provided with a longitudinal groove, 33 extending from the bottom of the chamber up to an opening 34, made in the top of the hood 30, as is best shown in Fig. 5.

A cam 35, corresponding to the cam 17, heretofore described, is located in the said chamber 31, being secured to a shaft 36, mounted to turn in the side portions of the hood. The said cam 35 is provided with a peripheral groove 37 at its pivot portion and at its opposite end is provided with serrations 38, which serrations when brought into action face the groove 33 in the rear wall of the chamber 31, and when this cam is out of action the groove 37 in the cam is made to face the aforesaid groove 33 in the rear wall of the said chamber. I

The shaft 36 is passed up into thehood 30, preferably through slots 41, made in its side portions, and bearings 39 are attached to the outer side faces of the hood, as is shown in Figs. 4 and 6, to support the ends of the said shafts. Said shaft 36 is provided with a crank-handle 40, whereby to turn the said shaft, and thus move the cam 35 in the chamber.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. A check attachment for chocks and pulleys, comprising a body provided with a chamber having one of its walls concaved, a fan-shaped cam mounted to turn in the said chamber, which cam at its longest peripheral portion is provided with serrations and is provided at its pivot portion with a periph eral groove, and means for turning the cam.

2. A check attachment for pulleys and chocks, which check attachment consists of a body having opposing openings and a chamber in communication with said openings,the chamber being provided with a concaved rear wall forming a continuation of the corresponding walls of the openings, the said chamber being provided at its concaved portion with a longitudinal groove in communication with the end openings, a shaft mounted to turn in the said chamber, a cam secured on the shaft within the chamber,which cam is provided with serrations at the point farthest away from the shaft, and with a peripheral groove adjacent to the connection of the said cam with the shaft, and a handle for the said shaft, whereby to turn the same.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

RUDOLPH KURELLA.

Witnesses:

J. FRED. AoKER, J N0. M. RITTER. 

